Oven for heating asphalt tile and the like



Sept. 7, 1948. 'v. MAYER OVEN FOR HEATING ASPHALT TILE AND THE LIKEFiled July 7, 1945 2 Sheets-Sheet 1 INVENTOR. M 8 MlCHAEL MAYER V ATTORNEYS M. MAYER -OVEN FOR HEATING ASPHALT TILE AND THE LIKE Filed July7, 1945 Sept. 7, 1948.

2 Sheets-Sheet 2 INVENTOR.

MICHAEL MAYER ATTORNEYS Patented Sept. 7, 1948 OVEN FOR HEATING ASPHALTTILE AND THE LIKE Michael Mayer, Cleveland, Ohio Application July 7,1945, Serial No. 603,(567

4 Claims.

As is well known, in the laying of asphalt tile it becomes necessary tosoften the tile in order that they may be pressed into close fittingcontact with the underlying cement or other floor on which such tile arelaid, since such floor always presents slight irregularities and it isessential if good adherenceis to be obtained that the tile thus conformclosely. It has been the practice in laying these tile simply to applythe ame from a blow torch thereto, either individually or in a stack, soas to soiten at least the edges of the individual tile preparatory tolaying them. Not 'only is this a tedious operation which addsconsiderably to the cost of laying the tile, but the heating is anythingbut uniform and the results frequently unsatisfactcry in that the tilewhen laid will not be properly adhered.

One principal object of the present invention is to provide a simple andcompact form of transportable oven which may be used on the job to heattile of the type in question as required. A further object is toconstruct such oven so that it may be folded up into flat form whenstored or being transported. Still another object is to make the oven ofrugged Construction capable of withstanding the hard usage to which itis apt to be subjected while at the same time the Construction is suchas to enable the oven to be quickly set up wherever required for use.

It will be understood that while particularly designed for heating tileoi the type in question, no limitation to such particular use isimplied, and as a matter of fact, as will appear, the oven may beadvantageously utilized in other entirely unrelated fields.

To the accomplishment of the foregoing and related ends, said invention,then, consists of the means hereinafter fully described and particularlypointed out in the claims.

The annexed drawings and the following description set forth in detailcertain mechanism embodying the invention, such disclosed meansconstituting, however, but several of various mechanical forms in whichthe principle of the invention may be used.

In said anneXed drawings:

Fig. 1 is a perspective view of my improved oven as set up for use;

Fig. 2 is a vertical longituclinal section thereof taken on the planeindicated by the line 2-2 Fig. 1;

Fig. za is a broken section on the same plane of a detail on mwhat argerscale;

Fig. 3 is a transverse section on a plane taken at right angles to thatof Fig. 2, as indicated by the line 3-3 Fi 1:

Fig. 3a is a sectional View of another detail taken on the same plane,but on a somewhat larger scale; v

' Fig. 4 is a horizontal transverse section taken on the plane indicatedby the line 4-4 of Fig. 2.

. Fig. 5 is a longitudinal sectional view corresponding to that of Fig.2, but showing the oven in its collapsed or folded condition; and

Fig. 6 is a sectional view of a portion of the oven taken on the sameplane but showing a modification in Construction.

The main element of the oven is a rectangular frame made up of sidemembers I rigidly joined together at their respective ends by transversemembers 2 and at spaced intermediate point-s by additional transversemembers 3, 3, and if desred by other transverse members 4 locatedbetween said members 3. The foregoing frame members may be Convenientlymade of angle bars, of channel iron, of angles assembled to form boxlikemembers as shown at the ends, or of any other suitable cross-sectionalform. Hingedly attached to said frame at the four corners thereof,respectively, are legs 5 fashioned of materials similarly to the framemem bers proper, such hinges being disposed so as to permit the legs tobe folded inwardly into a plane parallel with that of the frame. Attheir upper ends such le'gs are provided with flanges 6 which, when thelegs are unfolded, bear against end members 2 of the frame so as to lockthe legs against outward swinging movement. Each ange 6 is preferably anintegral part of one of the two pairs of legs 5, one convenient mannerof so forming the legs and flange being to bend an angle bar intoU-shape as shown.

When the oven is set up it will desirably be supported on a movableplatform 'l on the order of a dolly or truck provided with rollers 8, as

shown in Fig-s. 2 and 3, the floor of the truck being made, if desired,of heat resistant material, such as sheet asbestos. such floor willfurthermore be formed with properly located openings 9 in which thelower ends of the legs 5 are received, and may extend laterally, asshown in Fig-s. 1 and 3, to provide a Supplemental support forotherequipment, and particularly the blow torch !0 which will be con-Veniently utilized as the heating means for the oven. To assist inproperly locating such blow torch, an interrupted rail ll is secured tothe corresponding lateral edges of the truck floor.

The top of the oven is formed by two plates 15, riveted or otherwisefixedly secured to the rame and extending from the respective endmembers 2 to the adjacent transverse member 3. The space between the twomembers 3 is covered over by a third plate !6 which, if desired, may beremova'ble, e. g. just loosely laid over the adjacent edges of plates!5.

I-lingedly attached to each side member I of the frame is a plate I?that extends across the entire length of said frame and is of a heightsomewhat less than that of the legs or supporting posts 5, so that whensaid plate is swung downwardly into contact with the legs in their openvertical position they will project therebeyond a sufiicient distance toengage the openings 9 in the floor 1. In this position of the platesthey will ibe desirably locked to the respective legs by means of turnbuttons !8 adjacent the lower ends of said legs, which in one positionpass freely through slots !9 in the plate, and then upon being turned,hold the latter in firm engagement with the legs.

Similarly hingedly attached to the 'respective end members 2 of theframe are other plates 29, preferably two at each end of the oven. Theseplates are free to be 'swung outwardly and upwardly from their verticalposition to a position of rest on top of the corresponding cover plate I5. Also hingedly attached to the respective spao'ed transverse members 3of the fr-ame are plates Zi which are of substantially less height, or'depth, than the side and end wall plates, depending, as shown in Figs. 2and 3, approxinately only one-half the distance from the top to thefloor of the oven. said plates 21 are further-more notched or recessedat their upper edges to provide openings 22 where-by communication isaiforded between the space defined therebetween and the larger spaces inthe ends of the oven beyond the same. When it is desired to fold up theoven, these intermediate depending plates Zi Will be swung upwardly inopposite directions until they lie substantially in contact with thecorrespond ing top or cover plates 15, the end plates Zl at the sametime being swung so as to lie on top of said plates !5, as clearly shownin Fig. 5.

Centrally aligned with the space defined by the plates 2! when independing position, as shown in Fig. 2, are openings 23 in therespective side plates il, swinging covers 'z l being provided to closesuch open-ings except when in use, i. e. to permit the insertion of thenozzle of a blow torch lil through the opening, as illustrated in Figs.1 and 3. If desired, and depending upon the size of the oven, either oneor two such blow torches may be employed, but ordinarily one will besufficient to supply the necessary quantity of highly heated gases tothe oven and specifically to the space thus defined between thedepending intermediate walls ZI.

Assuning that the cover plate |6 is in use, a limited portion of thegases thus supplied will escape through openings 22 into the upperportions of the spaces at either end of the oven, but the main Volume ofthe gases will be deflec'ted downwardly around the lower edges ,of theplates 2: into such spaces. If the oven is being used, as primarlydesigned, for heating stacks T of tile, the spaces at the respectiveends thereof will be dimensioned so as to receive two such stacks ineach space with their edges exposed on all sides. To assist in properlylocating the stacks, the fioor 'l may be provided with markings 25, orlike means, which indicate the location of the inner corners of therespective stacks. The heated gases as they pass from the inner chamberinto the end spaces where these stacks of tile are thus located, willcirculate over and entirely around the latter, and by proper regulati-onof the amount of heat thus supplied, said tile, and particularly theuppermost ones in each stack, may be softened to just the proper degreeto facilitate the proper laying thereof. When it is desired to remove atile it is merely necessary to lift the corresponding hinged end wall 20in order to obtain ready access thereto, then such plate will be droppedagain into its closed position. By providing, as indic'ated, space forfour stacks, it is possible to have these of different color so that,where, as is usually the case, the tile are being laid to form a design,the appropriate ones may be successively withdrawn from the oven asrequired.

As indicating the quite dissmilar use to which my 'improved oven may heput, by leaving off the intermediate top cover plate !6 and providing aseries of supplemental transverse rame members or bars 35 betweenmembers 3, as shown in Fig. G, a highly eicient grill is provided foruse in the out-door .broiling of meats and like cooking Operations. Insuch case the end spaces in the oven may be utilized to heat or keepwarm the food thus prepared, or other food in suitable containers. Itwill also be understood that in place of using a blow torch lil tosupply highly heated gases to the inner chamber formed between`depending plates Zi, a gas burner or other suitable source of suchgases may be utilized. Also an electric resstance heating element may beinserted in such inner chamber to provide the necessary heat.

In order to place in the oven the articles to be heated, andparticularly heavy articles such as a stack of tile, it may be foundmore convenient to place such articles in proper location on the floorof the oven provided by the surface of the movable platform With theoven removed from the latter. Thereupon such oven can be put in placeover the stacks of tile, its proper location in turn being insured bythe insertion of the lower ends of the legs in the holes provided forthis purpose in such floor. While the walls of the oven will preferablybe made of sheet metal, sheets of other heat resistant material may ofcourse be used instead.

Other modes of applying the principle of my invention may be employedinstead of the one explained, change being made as regards the mechanismherein disclosed, provided the means stated by any of the followingclaims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention:

1. A heating oven comprising a rectangular frame, legs at the respectivecorners of said frame for supporting the same, plates attached to saidframe forming top, side and end walls, and two plates depending fromsaid frame intermediate of the ends thereof and defining a space for thereception of highl heated gases, said intermediate plates being formedwith cutaway portions in their upper edges.

2. A heating oven comprising a rectangular frame, legs at the respectivecorners of said frame for supporting the same, plates attached to saidframe forming top, side. and end Walls, two plates depending from saidframe intermediate of the ends thereof and defining a space for thereception of highly heated gases, one of said wall plates being formedwith an opening for introducin such gases into the upper portion of suchspace.

3. A heating oven comprising a rectangular frame,1egs at the respectivecorners of said fram for supporting the same, plates attached to saidframe forming top, side and end wails, two plates depending from saidframe intermediate of the ends thereof and defining a space for thereception of highly heated gases, one of said wall plates being formedwith an opening for introducing such gases into the upper portion ofsuch space, said intermediate plates being of less height than said wallplates.

4. A heating oven comprisng a rectangular frame, legs at the respectivecorners of said frame for supporting the same, plates attached to saidframe forming top, side and end walls, and two plates depending fromsaid frame intermediate of the ends thereof and defining a space for thereception of highly heated gases, all of said plates, except said topplates, as well as said legs being hingedly attached to said frame, saidintermediate plates being formed with cutaway portions in their upperedges.

MICHAEL MAYER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS 10 Number Name Date %0,445 Tomkins May 19, 1896585,046 Penfield June 22, 1897 '747,814 Watson Dec. 22, 1903 1,052,418Knapp Feb. 4, 1913 15 1,057,248 Little Mar. 25, 1913 1,156,773 GordonOct. 12, 1915 1,706,886 Kiler Mar. 26, 1929 2,140,924 Sather Dec. 20,1938 2,152,168 Anderson Mar. 28, 1939 20 2,307,914 Bitney Jan. 12, 1943FOREIGN PATENTS Number Country Date 339,979 France May 1904

